Mather, A.S.; Chapman, K. The land resource: biodiversity, protected areas and environmental conservation. Environmental Resources. Routledge. 2018-10-08: 118–135 [2024-06-07]. ISBN 978-1-315-84430-5. (原始内容存档于2024-06-07).
Mather, A.S.; Chapman, K. The land resource: biodiversity, protected areas and environmental conservation. Environmental Resources. Routledge. 2018-10-08: 118–135 [2024-06-07]. ISBN 978-1-315-84430-5. (原始内容存档于2024-06-07).